Delta Electronics VFD-EL manual B.5 Zero Phase Reactor RF220X00A, Diagram A, Diagram B

Appendix B Accessories

B.5 Zero Phase Reactor (RF220X00A)

Dimensions are in millimeter and (inch)

Cable	Recommended Wire
		Size			Wiring
type				Qty.
(Note)		2	Nominal		Method
	AWG	mm	(mm2)
	≦10	≦5.3	≦5.5	1	Diagram
Single-					A
core
	≦2	≦33.6	≦38	4	Diagram
					B
	≦12	≦3.3	≦3.5	1	Diagram
Three-					A
core	≦1	≦42.4	≦50	4	Diagram
					B

Note: 600V Insulated unshielded Cable.

Diagram A

Please wind each wire 4 times around the core. The reactor must be put at inverter output as close as possible.

			Zero Phase Reactor
Power	R/L1	U/T1
	S/L2	V/T2	MOTOR
Supply
	T/L3	W/T3

Diagram B

Please put all wires through 4 cores in series without winding.

			Zero Phase Reactor
Power	R/L1	U/T1	MOTOR
Supply	S/L2	V/T2
	T/L3	W/T3

Note 1: The table above gives approximate wire size for the zero phase reactors but the selection is ultimately governed by the type and diameter of cable fitted i.e. the cable must fit through the center hole of zero phase reactors.

Note 2: Only the phase conductors should pass through, not the earth core or screen.

Note 3: When long motor output cables are used an output zero phase reactor may be required to reduce radiated emissions from the cable.

B-12 Revision August 2008, 2ELE, V1.02